Mineral Name

Aragonite

Chemical Formula

CaCO3

Creator

Preview

image preview

Color

colorless, white, gray, yellowish-white, reddish-white

Class

Article

Luster

vitreous (glassy)

Diaphaneity

transparent to translucent

Hardness

3.5-4

Cleavage

{010} distinct

Fracture

sub-conchoidal

Density

2.93

Crystal Shape

vertical prisms terminated by steep dipyramid, radiating groups of large to very small crystals, tabular, and pseudohexagonal twins

Crystal System

Orthorhombic

Comments

Will effervesce on contact with dilute HCL.

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